Hair trimming comb



Sept. 25, 1951 SHAEFFER 2,569,344

HAIR TRIMMING COMB Filed June 20, 1949 3'Sheets-Sheet 1 I h iiifim I (1?. (an IIQVENTOR.

M02552?" SHHEFF'EQ Sept. 25, 1951 N. SHAEFFER HAIR TRIMMING COMB 3 Sheets-Sheet 5 7 Filed June 20, 1949 Ila,

IN VEN TOR. Ala/25527 5HHEFFEQ Patented Sept. 25, 1951 2,569,344 HAIR TR'IMMIN QCO MB Norbert Shaefler," Los Angeles, Calif., assignor, v by mesne assignments, to-Cutter-Corporation, a corporation of Delaware. 1

Application June 20, 1949seria11-id 100,143

This invention relates to a hair trimming comb and is particularly directed to improvements in comb structures which employ an adjustably mounted razor for cutting and trimming hair.

Among the objects of this invention is to provide an improved form of hair trimming comb having substantially the same cutting or trimming action on either of two edges. Another object is to provide a hair trimmin comb of this type having smooth flowing contours and an absence of unwieldy projections so that either face thereof may be placed next to the head of the user.

A particular object is to provide a more improved form of drive for moving the'razor relative to the comb body, the drive incorporating lock means for maintaining the razor in adjusted:

position.

A more particular object is to provide alocking device having a minimum number of parts and which is readily actuated between locking and released positions.

Another object is to provide an easily operable friction lock for holding the razor carrier in" selected position. 1 Y

Other and more detailed objects and advantages will appear hereinafter.

In the drawings:

Figure 1 is a top plan view showing a ferred embodiment of my invention.

Figure 2 is a side elevation thereof.

Figure 3 is a side elevation on an pre- ' enlarged scale partly broken away and partly in section showing details of the drive mechanism for moving the carrier relative to the comb body.

Figure 4 is a longitudinal sectional'plan view takensubstantially on the lines 4 4 as shown in Figure 3, and showing the locking parts in locked position. j 3 Figure 5 is a fragmentary sectional view similar to Figure 4 showing the parts of the locking device in released position.

Figure 6 is a transversesectional view taken: substantially on the lines 66 as shown in Fig-v ure- 3. p

Figure 7 is an exploded view showing the man- Q ner of assembly of the driving and locking parts for the carrier. I

locked position.

Figure 9 is similar to Figure 8 but showing the:

parts'in released position.

Fi ure. 10.1. aperspective view of. the lock ring:

3 Claims. (c1.o 30) employed in the structure shown in Figures -8 and 9.

Figure 11 is asectional'vie'w showing a further modification of the locking device, the parts" being in locked position.

' Figure 12 is a view similar to Figure 11 showing the parts in released position.

Referring to the drawings, the hair trimming comb generally designated [0 includes a comb body ll provided with teeth [2 extending along a forward'edge. Teeth I3: are also formed on the comb body-and extend for a portion of the length thereof along the rear edge. A razor blade lll'ha'ving' sharpened edges I5 and I6 is attached to a carrier I! mounted for movement trans versely of the comb body II. A gear'rack I8 is provided on the inner-end l9 of the carrier'l'l and 'a' driving gear 20 meshes with the rack "3.

Turning of the gear 20 serves to advance and retract the carrier H and razor blade [4 with respect to the comb body ll. Lock means are provided for securing the gear 2|] with respect to the comb body II, thereby preventing move-'- ment of the carrier l1 and blade 14 with respect to the comb body. I

' Referring to-theparticular parts of the construction in more detail, the comb body I l isprovided with a lip 22'at its outer end adapted to overlie the flange 23 at the outer end of the The comb body II is also provided carrier 11. with a lip 24 which overhangs the flange 25 at the inne'r end of the carrier [1. flange 25 is received within a groove 21 provided on the comb body. The groove 21 and the lips 22' and 24 cooperate with thecorresponding parts of the carrier I! to provide guide means whereby the carrier I I is guided for travel transversely of the comb body H. A'rib 28 on the lip 24 serves to P e nt inward movement of the carrier l1. toward'the gear 20.

with a knob 35,andthe lock ring and knob 35 are assembled to comprise a rotary control member generally designated 36. A hexagonal protuber'ance 31' on thelockringfl l is received in press. fit. relation within 1 a hexagonal zopening .38.

A rib 26 on the 3 within the knob 35. Once assembly of these parts is complete they function as a single integral unit and no relative motion occurs between the ring 34 and the knob 35.

When it is desired to change the position of the carrier I! and blade 14 with respect to the comb body II, the rotary control member 35 is grasped between the thumb and forefinger of the user and rotated with respect to the comb body II. This turns the gear 20 and causes rack I8 to advance or retract the carrier H, as desired." The carrier may then be locked in its adj-listed position, and this is accomplished by pushing the lock ring 34 toward the comb body ll, there.- by frictionally engaging theconical surface 33-on the rock ring within the conical bore 32 on the comb body II. The rotary control member 36 v is thus moved along its axis as a unit and. the frictional engagement of the surfaces 32and-33 effectively prevents rotation of the member 36 and hence the rack l8;,and carrier I1 are held in. adjusted position.

When ,itis desired torelease'the locking action, theknob 35 is moved toward the comb body ll, thereby separating thelocking: surfaces 32 and; 33.. The position of the parts in released position is shown in Figure 5. If, desired, the 1 ck;-ring:,,34; may be provided with a central conical.recess..39. which may act as asuction grip on-the-thumb of the user. The knob 35 may also have a conical; recess in its outer-surface, and thisrecess is preferably provided withser rations .40-.-xfor enhancingthe frictional grip of they user; in order to turn therotary control member 36.

The exposed-outer surface 41 of the. carrier II is provided with a plurality of shallow recesses 42 which align with thepattern of the teeth l2" on the-comb body. Thesurface 4| is .alsoprovided with a. series of' indentations 43 which-- alignwith the pattern of theteeth l3" onthej. comb. body. The surface4l has its counterpart, on the back face-ofithe comb bodyopposite the position ofthe carrier II; The front and back: faces of the hair trimming comb I are there-- fore: substantially similar as shown in Figure 1 andvery nearly symmetrical with-respectito the central razor blade l4. Furthermore, the knob 35'; projects;for a, distance-similarlto the projectionof the lock ring 34 so that the two sides of" the=hairtrimming comb are very much alike. Accordingly, the device may be used withleithersideincontactwith the head of the user. The. comb 1! may likewise be used oneither side on otherparts of therbody such as, for example, in: shaving or trimming hair from the legs or arms Whenitis desired to, insert a new razor blade H, the rotary control member 35 is'turned'to advance the, rack 18 to theend of its stroke-and; the carrier and razor blade are, then withdrawn: manually; A new blade is inserted on,;the protuberances29 land the assembled blade and carrier are then reinserted'under the lips 22' and 24." The rib 261fits-in;the-groove Z'Iand-the rack I8. is brought into mesh with the driving-gears;

Inqthe modified form of my invention ,shown in Figures 8, 9 and 10, the friction lock isare-, placed with a positive lock. for securing; the: blade 14 in; adjusted position. As shown inrthe drawings the rotary lock, member 36c; includes.v a knorb, 35a fixedwith respect to a. lockring 3.4a. Aldriving gear Zilwmeshes. with rack, I8a in,the.; same manner as described above. The lockring. 34a .is provided with an annular series of "lock-- mg -teeth 44- which areadapted to fit into ease- 1 ries of corresponding teeth 45 formed on the comb body Ila. When the knob 35a is depressed as shown in Figure 9, the teeth 44 and 45 are separated so that the gear 20a can be turned for advancing and retracting the rack IBa. When the lock ring 3411, is moved in a direction to bring the teeth 44 into mesh with the teeth 45, rotary motion of the lock ring 34a and knob, 35a is effectively prevented. The cylindrical bore 45 in the comb body I la fits the cylindrical projection 41 on the lock ring 34a sufficiently close so that frictional resistance is developed to hold the rotary control member 36a in selected axially adjusted position;

In the-further modified form of my invention shown in Figures 11 and 12, the knob 35b is arrangedto. fitwithin a shallow recess or counterbore provided in the back face of the comb body llb. The lock ring 341) has an annular flange 5| positioned radially outwardly from the annular series, of locking teeth 44b. The knob35b-"and lock ring 34?) comprise therotary, controlmember 35b. When this member is depressed'ias shown in Figure 12, a portion of, the- Having fully described my invention, it is to. be understood that I do not'wish to be limited to, the details herein set forth, but my inventiong'is;

of the full scope of the appended claims.

I;-c1aim:

1. In a-hair trimming comb device, the combi nation of-a comb body, a carrier for a sharpened blade, means for mounting the carrier for'sliding,

movement relative to the comb body,- a two-part rotary; control member, means connecting the; two parts for operation as a unit, a rack on the" carrier, a; gear on one-of the parts of the'rota'ry control member meshing with the rack wherebythe rotary control member may advance and retract the carrier, and rotation lock means comprising cooperating-parts on, the comb body. and

the other partof" the rotary control member selectively engageable through axial movement of therota-ry control member.

2. In a hair trimming comb device, the combi- 5 nation ofra comb body, acarrier for a sharpened blade, meansformounting the carrier for sliding movement relative to the comb body, a two-partrotary control member, the two parts being assembled into unitary operative relationshipfrom oppositesides ,ofv the comb body, a, rack, on the carrienlagear on one of the parts ,of the rotary control member meshing with the rack whereby.

the rotary control member may advance and retract the carrier, and rotation lock means on the c comb body'and the other part of the rotary conment on the comb body, a two-part rotary control member, the two parts'b'eing assembled into unitary operative relationship from opposite; sides of thercomb body, a'rack on the carrier a l land razor gear on one of the parts of the rotary control member meshing with the rack whereby the rotary control member may advance and retract the carrier, and cooperating friction surfaces on the comb body and the other part of the rotary 5 6 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date Davis Aug. 22, 1950 Number 

